Lathe-chuck.



No. 886,812'. 'PATENTED MAY 5, 1908.

J. M. JIPPERSON.

LATHB CHUCK.

APPLICATION FILED AUG. 2, 1907.

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PATENTED MAY 5, 1908.l J; M. JIPPBRSON. l

LATHE CHUCK. APPLIUATION FILED AU. 2, 1907.

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UNITED STATES PATENT OFFICE.

JOHN MARSEN .IIPPERSON, OF DALLAS, TEXAS, ASSIGNOR OF ONE-SIXTH TO CHARLES-P. DAWSON, ONE-SIXTH TO GILBERT H. IRISH, AND ONE-SIXTH TO WILLIAM H. JONES, OF

DALLAS, TEXAS.

LATHE-CHUCK.

Specication of Letters Patent.

Patented May 5, 1908.

To all whom it may concern:

y Be it known that I, JOHN iNIAnsEN J IPPER- SON, a citizen of Denmark, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Lathe-Chucks, of which the following is a specification.

This invention relates to lathe chucks, and more particularly to a chuck for holding the space blocks of cotton gins while said blocks are being cut.

Heretofore, in the manufacturevof space blocks, it has been necessary, when it was desirable to remove or fit a space block to the lathe, to stop the machine, thus consuming a great deal of time between the several opera'- tions.

It is an object of my invention to provide a chuck which will permit the space block to be put in and taken out of the lathe without stopping said lathe, thus saving a great deal of time, as by enabling one man to do the work of four. A

TWith this and other objects in view, the invention consists in the parts and the combination of parts hereinafter set forth and more particularljT pointed out in the appended claims. y

In the drawings, Figure 1 is a side view of the lathe chuck, Fig. 2 is a longitudinal section; Eig. 3 is a detached sectional view; and Figs. 4, 5 and 6 are detail views respectively of the head chuck, the tail chuck, and the member that turns freely upon the tail chuck.

Referring more articularly to the drawings, 1 indicates a riving spindle held in the usual manner against axial movement. The outer end of this spindle is provided with eX- ternal screw threads 2 upon which is screwed the head chuck 3 which is provided with an internally threaded socket 4 for the reception of the screw threaded portion of the spindle 1. The free end of the head chuck is provided with an annular projection 5.

Arranged in alinement with the he ad chuck is the stationary spindle 6 which is mounted in the usual manner so as to move axially. This spindle 6 carries a threaded portion 7 to which is fitted the socketed end 8 of the tail chuck 9. This tail chuck is formed with a central cylindrical projection 10 extending from the head chuck and with an annular groove 11.

Fitted upon and arranged to turn freely on the cylindrical projection 10 is a ring member 12. This ring member has that face, that is disposed toward the groove face of the tail chuck, provided with an annular groove 13, and in this groove and the groove on the tail chuck is arranged a series of balls 14. The ends of the ring member 12 are provided with annular grooves 15 and 16, in which are arranged two series of balls 17 and 1S bearing upon the cylindrical projection 10 of the tail chuck. The ring member 12 is further provided with an annular work seat 19 adapted to receive the ring shaped space block 20, the seat providing a Lproj ecting por,

tion upon the ring member, a apted to enter the annular projection on the head chuck. To hold the ring member upon the tail chuck, there is provided a holding means in the form of a ring 21, which is adapted to surround that portion of thecylindrical projection l() which projects through the ring member, screws 22 passing radially through the ring and holding it to the projection 10.

In operation, the head chuck 3 is set in rotation and the tail chuck 3 with the ring 12 is moved away from the head chuck. The space block is then fitted on the circular projection of the freely-turning work-supporting ring member, and the tail chuck, With the ring member and the space block, is moved toward the rotating head chuck, thus causing the space block to be clamped between the annular projection 5 and the work supporting ring memberl 12 and causing the space block to be rotated with the head chuck and operated upon by the usual cutting -device to reduce the width of the space block. When the space block has been iinished, the tail chuck is moved axially and carries the space block away from the head chuck 3, thus permitting the space block to be removed and another space block placed upon the ring member 12 without stopping the head chuck.

It is apparent that the ball bearing connection between the ring member 12 and the tail chuck will permit of the free movement of the ring member with very little friction.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent is:

1. The combination with a head chuck formed with an annular projection, of a tail chuck, and a member supported by the tail chuck and adapted to rotate thereon, said member being formed with a Work-receiving projection adapted to enter the annularv projection of the headfchuck.

2. The combination of the head and tail chucks respectively adapted to be applied to rotating and non-rotating members of a latheand constructed to clamp a work piece between them; the tail chuck being constructed with a cylindricalk projection er tending beyond its face and'provided with a rotating work supporting part rotatably mounted on said projection and bearing against thev face ofi the tail chuck, and constructedwith a projection adapted to extend through the work piece andi support the same and with av clamping face adapted to bear against the face of the work piece andv clamp it against thehead chuck.

3. The combination of a driving spindle carrying a head chuck formed with'an annular projection, a holding spindle-carrying a taily chuck constructedwith a cylindrical projection, a rotary member mounted upon the proje'ctionofv the tail chuck through the medium of anti-friction bearings and con structed with a cylindrical work receiving seat adaptedto pass within the annular projection on the head chuck and also with a tace coerating with saidannular projec tion to c amp the work, and a holding ringone end screw threaded, a tailchuck having an" internally screw threaded'socket fitted onthe screw threadedv end of the latter spindle and also having a cylindrical projection, a`

ring member turning freely uponthecylindrical'projection and formed with an annular Work receiving seat upon which thev work may bel clamped by the annular projection onthe head chuck, and a holding ring surrounding the cylindrical projection on the tail chuck and holding the ring member on said cylindrical projection.

The foregoing specification signed at Dallas, Texas, this 4th day of April, 1907.

JOHN MARSEN JIPPERSON.y Witnesses:

WILLIAE HENRY JONES, GILBERT H. IRISH. 

